{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://api-evangelist.github.io/oracle-primavera/json-schema/oracle-primavera-activity-schema.json",
  "title": "Oracle Primavera P6 Activity",
  "description": "Schema for an Oracle Primavera P6 schedule activity, representing a work item within a project WBS.",
  "type": "object",
  "properties": {
    "ObjectId": {
      "type": "integer",
      "description": "System-generated unique identifier"
    },
    "Id": {
      "type": "string",
      "maxLength": 40,
      "description": "User-defined activity ID"
    },
    "Name": {
      "type": "string",
      "maxLength": 120,
      "description": "Activity name"
    },
    "ProjectObjectId": {
      "type": "integer",
      "description": "Parent project ObjectId"
    },
    "WBSObjectId": {
      "type": "integer",
      "description": "Parent WBS element ObjectId"
    },
    "Type": {
      "type": "string",
      "enum": [
        "Task Dependent",
        "Resource Dependent",
        "Level of Effort",
        "Start Milestone",
        "Finish Milestone",
        "WBS Summary"
      ],
      "description": "Activity type"
    },
    "Status": {
      "type": "string",
      "enum": ["Not Started", "In Progress", "Completed"],
      "description": "Current activity status"
    },
    "PercentComplete": {
      "type": "number",
      "minimum": 0,
      "maximum": 100,
      "description": "Activity percent complete"
    },
    "PercentCompleteType": {
      "type": "string",
      "enum": ["Physical", "Duration", "Units"],
      "description": "Method for calculating percent complete"
    },
    "PlannedStartDate": {
      "type": "string",
      "format": "date-time"
    },
    "PlannedFinishDate": {
      "type": "string",
      "format": "date-time"
    },
    "ActualStartDate": {
      "type": ["string", "null"],
      "format": "date-time"
    },
    "ActualFinishDate": {
      "type": ["string", "null"],
      "format": "date-time"
    },
    "RemainingStartDate": {
      "type": ["string", "null"],
      "format": "date-time"
    },
    "RemainingFinishDate": {
      "type": ["string", "null"],
      "format": "date-time"
    },
    "PlannedDuration": {
      "type": "number",
      "description": "Planned duration in hours"
    },
    "ActualDuration": {
      "type": "number",
      "description": "Actual duration accrued in hours"
    },
    "RemainingDuration": {
      "type": "number",
      "description": "Remaining duration in hours"
    },
    "TotalFloat": {
      "type": "number",
      "description": "Total float in hours; negative values indicate critical path"
    },
    "FreeFloat": {
      "type": "number",
      "description": "Free float in hours"
    },
    "CriticalFlag": {
      "type": "boolean",
      "description": "True if activity is on the critical path"
    },
    "CalendarObjectId": {
      "type": "integer",
      "description": "Assigned work calendar ObjectId"
    },
    "PrimaryConstraintType": {
      "type": "string",
      "enum": [
        "None",
        "Start On",
        "Start On or Before",
        "Start On or After",
        "Finish On",
        "Finish On or Before",
        "Finish On or After",
        "Mandatory Start",
        "Mandatory Finish",
        "As Late as Possible"
      ]
    },
    "PrimaryConstraintDate": {
      "type": ["string", "null"],
      "format": "date-time"
    }
  },
  "required": ["ObjectId", "Id", "Name", "ProjectObjectId", "WBSObjectId", "Type", "Status"],
  "examples": [
    {
      "ObjectId": 30001,
      "Id": "A1000",
      "Name": "Site Preparation",
      "ProjectObjectId": 10001,
      "WBSObjectId": 20010,
      "Type": "Task Dependent",
      "Status": "Completed",
      "PercentComplete": 100.0,
      "PercentCompleteType": "Physical",
      "PlannedStartDate": "2025-01-15T08:00:00Z",
      "PlannedFinishDate": "2025-03-01T17:00:00Z",
      "ActualStartDate": "2025-01-16T08:00:00Z",
      "ActualFinishDate": "2025-03-05T17:00:00Z",
      "PlannedDuration": 288.0,
      "ActualDuration": 296.0,
      "RemainingDuration": 0.0,
      "TotalFloat": -8.0,
      "CriticalFlag": true
    }
  ]
}